US9766420B2 - Apparatus and method for absorbing laser energy that fails to couple into the core of a laser fiber, and for absorbing the energy that has been transmitted to the cladding of the laser - Google Patents
Apparatus and method for absorbing laser energy that fails to couple into the core of a laser fiber, and for absorbing the energy that has been transmitted to the cladding of the laser Download PDFInfo
- Publication number
- US9766420B2 US9766420B2 US14/217,927 US201414217927A US9766420B2 US 9766420 B2 US9766420 B2 US 9766420B2 US 201414217927 A US201414217927 A US 201414217927A US 9766420 B2 US9766420 B2 US 9766420B2
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- US
- United States
- Prior art keywords
- fiber optic
- cladding
- fiber
- ferrule
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/241—Light guide terminations
- G02B6/243—Light guide terminations as light absorbers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
Definitions
- This invention relates to a fiber optic connector and connector system or arrangement for coupling focused radiant energy from a laser to a fiber optic conductor.
- the invention provides an improvement to the connector arrangements disclosed in the Inventor's U.S. Pat. Nos. 5,179,610 and 7,090,411, incorporated by reference herein.
- radiation that fails to couple with a small core fiber and radiation which couples with higher order propagation modes is absorbed by the connector or surrounding structures.
- the improvement permits the use of a fiber with full cladding, thereby making the fiber termination more rugged and simplifying manufacturability.
- a fiber optic connector for coupling focused radiant energy from a laser to a fiber optic conductor includes a quartz alignment ferrule that is fused mechanically and optically to the fiber's proximal end, either by an index matching first adhesive or by heat fusing the cladding to the ferrule without removing the cladding from the end of the fiber.
- the fiber and ferrule are attached to the fiber's proximal termination connector by an adhesive with a high refractive index which absorbs errant radiant energy that has propagated in the fiber's cladding. The absorbed errant energy is dissipated by the connector assembly as it is converted to heat.
- FIG. 1 is a schematic depiction showing the effects of thermal lensing on coupling of a focused laser beam to the core and cladding of the fiber.
- FIG. 2 is a cross-sectional side view of proximal terminal connector constructed in accordance with the principles of a preferred embodiment of the invention.
- a laser beam 19 is focused into the fiber core 23 by the laser's focusing lens 21 with a half angle of acceptance ( ⁇ 1 ).
- an expanded beam 20 is focused into both the fiber core 23 and cladding 22 with a half angle of acceptance ( ⁇ 2 ).
- the present invention uses refractive index matching adhesives to provide a path for dissipation of the energy in the cladding to a heat sink in the form of a ferrule and/or structures in contact with the ferrule.
- the termination arrangement of a preferred embodiment of the invention is included in a proximal termination connector 10 and threaded nut 8 , although the illustrated connector and nut configuration should not be taken as limiting since the invention can be applied to a variety of termination connectors, including ones without nuts.
- the fiber inside the connector consists of a fiber core 1 , cladding 2 , coating 7 , and buffer 6 .
- the fiber is fused to the quartz ferrule 3 by a refractive index matching first adhesive 4 or by heat fusing the cladding 2 to the ferrule 3 without removing the cladding from the end of the fiber, and the fiber and ferrule are secured in the connector by a high refractive index second adhesive 5 , thereby providing a dissipation path for energy that has coupled to the cladding 2 rather than to the core 1 of the fiber.
Abstract
A fiber optic connector for coupling focused radiant energy from a laser to a fiber optic conductor includes a quartz alignment ferrule that is fused mechanically and optically to the fiber's proximal end, either by an index matching first adhesive or by heat fusing the cladding to the ferrule without removing the cladding from the end of the fiber. The fiber and ferrule are attached to the fiber's proximal termination connector by a second adhesive with a high refractive index which absorbs errant radiant energy that has propagated in the fiber's cladding. The absorbed errant energy is dissipated by the connector assembly as it is converted to heat.
Description
This application claims the benefit of U.S. provisional patent application Ser. No. 61/788,238, filed Mar. 15, 2013, and incorporated herein by reference.
1. Field of the Invention
This invention relates to a fiber optic connector and connector system or arrangement for coupling focused radiant energy from a laser to a fiber optic conductor.
2. Description of Related Art
The invention provides an improvement to the connector arrangements disclosed in the Inventor's U.S. Pat. Nos. 5,179,610 and 7,090,411, incorporated by reference herein. In the connectors disclosed in the cited patents, radiation that fails to couple with a small core fiber and radiation which couples with higher order propagation modes is absorbed by the connector or surrounding structures. The improvement permits the use of a fiber with full cladding, thereby making the fiber termination more rugged and simplifying manufacturability.
A fiber optic connector for coupling focused radiant energy from a laser to a fiber optic conductor includes a quartz alignment ferrule that is fused mechanically and optically to the fiber's proximal end, either by an index matching first adhesive or by heat fusing the cladding to the ferrule without removing the cladding from the end of the fiber. The fiber and ferrule are attached to the fiber's proximal termination connector by an adhesive with a high refractive index which absorbs errant radiant energy that has propagated in the fiber's cladding. The absorbed errant energy is dissipated by the connector assembly as it is converted to heat.
As shown in FIG. 1 , a laser beam 19 is focused into the fiber core 23 by the laser's focusing lens 21 with a half angle of acceptance (θ1). However, due to thermal lensing, an expanded beam 20 is focused into both the fiber core 23 and cladding 22 with a half angle of acceptance (θ2). The present invention uses refractive index matching adhesives to provide a path for dissipation of the energy in the cladding to a heat sink in the form of a ferrule and/or structures in contact with the ferrule.
As shown in FIG. 2 , the termination arrangement of a preferred embodiment of the invention is included in a proximal termination connector 10 and threaded nut 8, although the illustrated connector and nut configuration should not be taken as limiting since the invention can be applied to a variety of termination connectors, including ones without nuts.
The fiber inside the connector consists of a fiber core 1, cladding 2, coating 7, and buffer 6. The fiber is fused to the quartz ferrule 3 by a refractive index matching first adhesive 4 or by heat fusing the cladding 2 to the ferrule 3 without removing the cladding from the end of the fiber, and the fiber and ferrule are secured in the connector by a high refractive index second adhesive 5, thereby providing a dissipation path for energy that has coupled to the cladding 2 rather than to the core 1 of the fiber.
Having thus described a preferred embodiment of the invention in connection with the accompanying drawings, it will be appreciated that the invention is not to be limited to the specific embodiments or variations disclosed.
Claims (6)
1. A fiber optic connector arrangement for coupling focused radiant energy from a laser to a fiber optic conductor, the fiber optic conductor including a core and cladding, comprising:
an alignment ferrule; and
an index matching first adhesive for mechanically and optically fusing the alignment ferrule to a proximal end of the fiber optic conductor,
wherein the fiber optic conductor and ferrule are attached to a connector by a second adhesive with a high refractive index so as to absorb errant radiant energy that has propagated in the fiber optic conductor's cladding.
2. A fiber optic connector arrangement as claimed in claim 1 , wherein the ferrule is a quartz alignment ferrule.
3. A fiber optic connector arrangement as claimed in claim 1 , wherein the connector is a proximal termination connector with a coupling nut.
4. A fiber optic connector arrangement for coupling focused radiant energy from a laser to a fiber optic conductor, the fiber optic conductor including a core and cladding, comprising:
an alignment ferrule, wherein the cladding of the fiber optic conductor is heat fused to the ferrule without removing the cladding from the end of the fiber optic conductor; and
an adhesive for attaching the fiber optic conductor and ferrule to a connector, wherein the adhesive has a high refractive index so as to absorb errant radiant energy that has propagated in the fiber optic conductor's cladding.
5. A fiber optic connector arrangement as claimed in claim 4 , wherein the ferrule is a quartz alignment ferrule.
6. A fiber optic connector arrangement as claimed in claim 4 , wherein the connector is a proximal termination connector with a coupling nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/217,927 US9766420B2 (en) | 2013-03-15 | 2014-03-18 | Apparatus and method for absorbing laser energy that fails to couple into the core of a laser fiber, and for absorbing the energy that has been transmitted to the cladding of the laser |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361788238P | 2013-03-15 | 2013-03-15 | |
| US14/217,927 US9766420B2 (en) | 2013-03-15 | 2014-03-18 | Apparatus and method for absorbing laser energy that fails to couple into the core of a laser fiber, and for absorbing the energy that has been transmitted to the cladding of the laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| US20140270661A1 US20140270661A1 (en) | 2014-09-18 |
| US9766420B2 true US9766420B2 (en) | 2017-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/217,927 Expired - Fee Related US9766420B2 (en) | 2013-03-15 | 2014-03-18 | Apparatus and method for absorbing laser energy that fails to couple into the core of a laser fiber, and for absorbing the energy that has been transmitted to the cladding of the laser |
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| US (1) | US9766420B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9429718B1 (en) * | 2015-06-24 | 2016-08-30 | International Business Machines Corporation | Single-mode polymer waveguide connector |
| KR101726609B1 (en) * | 2015-11-13 | 2017-04-13 | 서울시립대학교 산학협력단 | Method of manufacturing saturable absorber for pulsed laser |
| US10281658B2 (en) | 2016-08-10 | 2019-05-07 | International Business Machines Corporation | Single-mode polymer waveguide connector assembly device |
Citations (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3912362A (en) | 1973-12-26 | 1975-10-14 | Corning Glass Works | Termination for fiber optic bundle |
| US4316204A (en) * | 1979-02-09 | 1982-02-16 | Fujitsu Limited | Optoelectronic semiconductor device |
| US4474429A (en) | 1982-03-04 | 1984-10-02 | Westinghouse Electric Corp. | Affixing an optical fiber to an optical device |
| US4575181A (en) | 1983-04-26 | 1986-03-11 | Tokyo Shibaura Denki Kabushiki Kaisha | Optical fiber assembly with cladding light scattering means |
| US4678273A (en) | 1983-12-23 | 1987-07-07 | Radians Ab | High power optical fiber with improved covering |
| US4737011A (en) | 1984-07-13 | 1988-04-12 | Dainichi-Nippon Cables Ltd. | Connector for high energy beam |
| US4762385A (en) | 1985-09-02 | 1988-08-09 | Kabushiki Kaisha Machida Seisakusho | Laser beam admitting device |
| US4868361A (en) * | 1988-04-01 | 1989-09-19 | General Electric Company | Coupling device for high power laser beam transmitting optical fibers |
| US4998795A (en) * | 1989-05-12 | 1991-03-12 | Amp Incorporated | Reflection-less terminator |
| US5097524A (en) * | 1990-05-17 | 1992-03-17 | G & H Technology, Inc. | Optical fiber termination |
| US5101457A (en) | 1990-02-28 | 1992-03-31 | At&T Bell Laboratories | Optical fiber with an integral lens at its end portion |
| US5132079A (en) | 1990-03-31 | 1992-07-21 | Gec-Marconi Limited | Optical fibre coupling device |
| US5179610A (en) | 1991-04-19 | 1993-01-12 | Trimedyne, Inc. | Connector for coupling of laser energy |
| US5243681A (en) | 1992-04-13 | 1993-09-07 | Amp Incorporated | Aperture disk attenuator for laser diode connector |
| US5267342A (en) * | 1991-10-11 | 1993-11-30 | Seikoh Giken Co., Ltd. | Light attenuating element and method of producing the same |
| US5291570A (en) | 1992-09-09 | 1994-03-01 | Hobart Laser Products, Inc. | High power laser - optical fiber connection system |
| US5452392A (en) | 1994-06-20 | 1995-09-19 | Cogent Light Technologies, Inc. | Fiber optic, coupling apparatus having means for preventing thermal damage to the fiber optic at the fiber-to-light source coupling |
| US5490227A (en) | 1993-10-27 | 1996-02-06 | Matsushita Electric Industrial Co., Inc. | Light receiving module for SCM transmission |
| US5619602A (en) | 1993-04-01 | 1997-04-08 | Permanova Laser System Ab | Fibre |
| US5668902A (en) | 1994-02-23 | 1997-09-16 | Nec Corporation | Coupling structure between a semiconductor laser and an optical fiber and coupling method thereof |
| JPH10246813A (en) * | 1997-03-06 | 1998-09-14 | Showa Electric Wire & Cable Co Ltd | Optical fixed attenuator |
| US5829445A (en) | 1992-09-24 | 1998-11-03 | Iowa State University Research Foundation, Inc. | Methods for laser treatment of tissue |
| US5946437A (en) | 1994-07-27 | 1999-08-31 | Miyachi Technos Corporation | Optical fiber connector |
| US6154596A (en) | 1998-03-26 | 2000-11-28 | Hughes Electronics Corporation | Front end preparation procedure for efficient coupling and improved power handling of light into a multi-mode fiber |
| US6167177A (en) | 1996-07-05 | 2000-12-26 | Permanova Lasersystem | Optical fiber cable |
| US6282349B1 (en) | 2000-02-17 | 2001-08-28 | Stephen Griffin | Launch fiber termination |
| US6317550B2 (en) | 1997-05-07 | 2001-11-13 | The Furukawa Electric Co., Ltd. | Lensed optical fiber |
| US6332721B1 (en) | 1998-07-10 | 2001-12-25 | Mitsubishi Chemical Corp. | Laser diode module |
| US6347167B1 (en) | 2000-04-14 | 2002-02-12 | C Speed Corporation | Fiber optic cross connect with uniform redirection length and folding of light beams |
| US20020021870A1 (en) | 2000-06-22 | 2002-02-21 | Jan-Ake Engstrand | Method and an arrangement relating to optical fibers |
| US20020071459A1 (en) | 2000-09-29 | 2002-06-13 | Kevin Malone | Apparatus and method for VCSEL monitoring using scattering and reflection of emitted light |
| US6477295B1 (en) | 1997-01-16 | 2002-11-05 | Jds Uniphase Corporation | Pump coupling of double clad fibers |
| US6488414B1 (en) | 1999-02-05 | 2002-12-03 | Corning Incorporated | Optical fiber component with shaped optical element and method of making same |
| US20030118283A1 (en) | 2001-11-30 | 2003-06-26 | Agilent Technologies, Inc. | Eye-safe optical fibre transmitter unit |
| US6595698B2 (en) | 2000-06-13 | 2003-07-22 | Siwave, Inc. | High density fiber terminator/connector |
| US6597846B1 (en) | 1999-09-16 | 2003-07-22 | Sumitomo Electric Industries Co., Ltd. | Optical fiber |
| US20050191012A1 (en) * | 2002-10-22 | 2005-09-01 | Mcgarvey Brian | Connection of optical waveguides to optical devices |
| US7090411B2 (en) | 2002-02-22 | 2006-08-15 | Brown Joe D | Apparatus and method for diffusing laser energy that fails to couple into small core fibers, and for reducing coupling to the cladding of the fiber |
| US20070211999A1 (en) * | 2006-03-10 | 2007-09-13 | Shigeru Kobayashi | Optical Connector |
| US20080305255A1 (en) * | 2007-06-07 | 2008-12-11 | Fujifilm Manufacturing U.S.A. Inc. | Optical waveguide coating |
| US20080304799A1 (en) * | 2007-06-07 | 2008-12-11 | Fujifilm Manufacturing U.S.A. Inc. | Thermosetting optical waveguide coating |
| US20100014814A1 (en) * | 2008-07-17 | 2010-01-21 | Hirokazu Taniguchi | Fixing structure of exterior member to optical fiber cable |
| US7918612B1 (en) * | 2007-05-29 | 2011-04-05 | Agiltron, Inc. | Method and apparatus for mechanically splicing optic fibers |
-
2014
- 2014-03-18 US US14/217,927 patent/US9766420B2/en not_active Expired - Fee Related
Patent Citations (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3912362A (en) | 1973-12-26 | 1975-10-14 | Corning Glass Works | Termination for fiber optic bundle |
| US4316204A (en) * | 1979-02-09 | 1982-02-16 | Fujitsu Limited | Optoelectronic semiconductor device |
| US4474429A (en) | 1982-03-04 | 1984-10-02 | Westinghouse Electric Corp. | Affixing an optical fiber to an optical device |
| US4575181A (en) | 1983-04-26 | 1986-03-11 | Tokyo Shibaura Denki Kabushiki Kaisha | Optical fiber assembly with cladding light scattering means |
| US4678273A (en) | 1983-12-23 | 1987-07-07 | Radians Ab | High power optical fiber with improved covering |
| US4737011A (en) | 1984-07-13 | 1988-04-12 | Dainichi-Nippon Cables Ltd. | Connector for high energy beam |
| US4762385A (en) | 1985-09-02 | 1988-08-09 | Kabushiki Kaisha Machida Seisakusho | Laser beam admitting device |
| US4868361A (en) * | 1988-04-01 | 1989-09-19 | General Electric Company | Coupling device for high power laser beam transmitting optical fibers |
| US4998795A (en) * | 1989-05-12 | 1991-03-12 | Amp Incorporated | Reflection-less terminator |
| US5101457A (en) | 1990-02-28 | 1992-03-31 | At&T Bell Laboratories | Optical fiber with an integral lens at its end portion |
| US5132079A (en) | 1990-03-31 | 1992-07-21 | Gec-Marconi Limited | Optical fibre coupling device |
| US5097524A (en) * | 1990-05-17 | 1992-03-17 | G & H Technology, Inc. | Optical fiber termination |
| US5179610A (en) | 1991-04-19 | 1993-01-12 | Trimedyne, Inc. | Connector for coupling of laser energy |
| US5267342A (en) * | 1991-10-11 | 1993-11-30 | Seikoh Giken Co., Ltd. | Light attenuating element and method of producing the same |
| US5243681A (en) | 1992-04-13 | 1993-09-07 | Amp Incorporated | Aperture disk attenuator for laser diode connector |
| US5291570A (en) | 1992-09-09 | 1994-03-01 | Hobart Laser Products, Inc. | High power laser - optical fiber connection system |
| US5829445A (en) | 1992-09-24 | 1998-11-03 | Iowa State University Research Foundation, Inc. | Methods for laser treatment of tissue |
| US5619602A (en) | 1993-04-01 | 1997-04-08 | Permanova Laser System Ab | Fibre |
| US5490227A (en) | 1993-10-27 | 1996-02-06 | Matsushita Electric Industrial Co., Inc. | Light receiving module for SCM transmission |
| US5668902A (en) | 1994-02-23 | 1997-09-16 | Nec Corporation | Coupling structure between a semiconductor laser and an optical fiber and coupling method thereof |
| US5452392A (en) | 1994-06-20 | 1995-09-19 | Cogent Light Technologies, Inc. | Fiber optic, coupling apparatus having means for preventing thermal damage to the fiber optic at the fiber-to-light source coupling |
| US5946437A (en) | 1994-07-27 | 1999-08-31 | Miyachi Technos Corporation | Optical fiber connector |
| US6167177A (en) | 1996-07-05 | 2000-12-26 | Permanova Lasersystem | Optical fiber cable |
| US6477295B1 (en) | 1997-01-16 | 2002-11-05 | Jds Uniphase Corporation | Pump coupling of double clad fibers |
| JPH10246813A (en) * | 1997-03-06 | 1998-09-14 | Showa Electric Wire & Cable Co Ltd | Optical fixed attenuator |
| US6317550B2 (en) | 1997-05-07 | 2001-11-13 | The Furukawa Electric Co., Ltd. | Lensed optical fiber |
| US6154596A (en) | 1998-03-26 | 2000-11-28 | Hughes Electronics Corporation | Front end preparation procedure for efficient coupling and improved power handling of light into a multi-mode fiber |
| US6332721B1 (en) | 1998-07-10 | 2001-12-25 | Mitsubishi Chemical Corp. | Laser diode module |
| US6488414B1 (en) | 1999-02-05 | 2002-12-03 | Corning Incorporated | Optical fiber component with shaped optical element and method of making same |
| US6597846B1 (en) | 1999-09-16 | 2003-07-22 | Sumitomo Electric Industries Co., Ltd. | Optical fiber |
| US6282349B1 (en) | 2000-02-17 | 2001-08-28 | Stephen Griffin | Launch fiber termination |
| US6347167B1 (en) | 2000-04-14 | 2002-02-12 | C Speed Corporation | Fiber optic cross connect with uniform redirection length and folding of light beams |
| US6595698B2 (en) | 2000-06-13 | 2003-07-22 | Siwave, Inc. | High density fiber terminator/connector |
| US20020021870A1 (en) | 2000-06-22 | 2002-02-21 | Jan-Ake Engstrand | Method and an arrangement relating to optical fibers |
| US20020071459A1 (en) | 2000-09-29 | 2002-06-13 | Kevin Malone | Apparatus and method for VCSEL monitoring using scattering and reflection of emitted light |
| US20030118283A1 (en) | 2001-11-30 | 2003-06-26 | Agilent Technologies, Inc. | Eye-safe optical fibre transmitter unit |
| US7090411B2 (en) | 2002-02-22 | 2006-08-15 | Brown Joe D | Apparatus and method for diffusing laser energy that fails to couple into small core fibers, and for reducing coupling to the cladding of the fiber |
| US20050191012A1 (en) * | 2002-10-22 | 2005-09-01 | Mcgarvey Brian | Connection of optical waveguides to optical devices |
| US20070211999A1 (en) * | 2006-03-10 | 2007-09-13 | Shigeru Kobayashi | Optical Connector |
| US7918612B1 (en) * | 2007-05-29 | 2011-04-05 | Agiltron, Inc. | Method and apparatus for mechanically splicing optic fibers |
| US20080305255A1 (en) * | 2007-06-07 | 2008-12-11 | Fujifilm Manufacturing U.S.A. Inc. | Optical waveguide coating |
| US20080304799A1 (en) * | 2007-06-07 | 2008-12-11 | Fujifilm Manufacturing U.S.A. Inc. | Thermosetting optical waveguide coating |
| US20100014814A1 (en) * | 2008-07-17 | 2010-01-21 | Hirokazu Taniguchi | Fixing structure of exterior member to optical fiber cable |
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| US20140270661A1 (en) | 2014-09-18 |
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